Spindle-bearing.



PATENTED MAR. 6, 1906.

F. SGHULZ. SPINDLE BEARING.

APPLIOATION FILED MAYI 1905 f4. 5 X M To (1.7] whom it NHL/j concern/.-

UsTTED sTATns FRITZ SCHULZ, OF CHICAGO, ILLINOIS, ASSIGNOR TO PATENT OFFICE.

FACTURING CO, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

SPIND-LE-BEARING.

Specification of Letters Patent.

Patented March 6, 1906.

Application filed May 1, 1905. Serial Nu. 258,365.

Be it known that .I, FRITZ ScnULZ, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, i have invented certain new and useful Improvements in Spindle-Bearings; and I do" hereby declare the following to be a full, clear, and exact description ofthe invention, such as will enable others skilled in the art to which it appertains to make and use the same. l My invention relates to a'novel construci tion in a spindle adapted for use on highl speed machinerysuch, for instance, as l metal-spinners lathes, buffers, grinders,&c. i the object being to provide a device of this character in which the bearings can be readily maintained perfectly true and can be adjusted any time without disassembling the parts and it consists in the features of construction and combinations of parts hereinafter fully described and claimed.

In the accompanying drawings, illustrating my invention, Figure l is a central vertical section of a high-speed spindle constructed in accordance with my invention. Figs. 2 and 3 are detail vertical transverse sections, on an enlarged scale, on the lines 2 2 and 3 3, 5 respectively, of. Fig. 1.

The spindles or shafts and bearings of l high-speed machinery very readily become l loose and untrue, and consequently rattle in the bearings, thus making lubrication both Il dillicult and expensive. The said spindles are not readily adjustable, and to repair the same it is generally necessary to rebabbit the bearings.

The main object of my invention is to pro- I vide means for readily adjusting the bearings to maintain the same true without necessitating any loss'of time otherwise incurred by l taking apart the machine containing such spindle and to provide ample means for j thoroughly lubricating the running parts.

To these and ,other ends my invention comprises a shaft A, provided adjacent one 5 end with an annular conical enlargement B, which is adapted to run in a tapered bushing l mounted in thestainlard D of the machine, said bushing being held against rotation by means of a pin E on said bushing enluring a. recess in the opening of said stand- I ard .l) adapted to receive the same. The; said bushing (I is provided with an annular l in any other suitable 1 the key,

opening T and j revolving the groove or recess E, communicating with a plurality of radial openings in said bushing and with an openingGin said standard, into which lubricating-oil is fed from a cup II or manner. At itsother end said shaftA is provided with a longitudinal key-seat I, in which a key is mounted, and the extreme end of said shaft is threaded, as at J, to receive a collar Ii. A cone L, having a groove to receive the projecting portion of is longitudinally movable on said end of said shaft A, being held by said key against rotation relatively thereto, said cone being oppositely disposed relatively to the cone B and fitting within a bushing M in the standard N, said bushing corresponding in construction with said bushing C, but being longer and externally threaded, as at O, at its extreme end, which projects beyond the outer face of said standard X and receives the internally-threaded-cap P, which holds said bushing securely in place within said standard. The .said collar h is cyliinlrical and laterally split or bifm'cated by means of a slot extending through more than onehalf the diameter and circuinference of said collar. In the free end of one of the tongues of said collar is a threaded opening adapted to receive the set-screw R, passing freely through an opening in the other tongue and by means of which said tongues arc contracted toward each other to securely bind said collar on the said threaded end of said shaft A. In the opposite portion of said collar is a peripheral recess S, and in said cap P and projecting end of said bushing M are readjusting-openings'T, through which a pin may be insert-ed to enter and engage said recess S to hold said collar against revolution relatively to said bushing.

he operation of my device is as follows: When it is desired to adjust the bearings, the spindle is stopped and a. pin inserted in the pressed upon the collar. The spindle is then revolved by hand until said pin springs into said rcccs: S, and by then spindle in the other direction slowly thcbearings may be adjusted to run either more freely or more snugly in an obvious manner, and when the proper adjustment has been attained the pin is removed.

ll said spindle or shall isdo bear end pres-- sure, a set-screw I ral recess in the latter,

THE soon MANU- mounted therein having oppositely-disposed tapered longitudinal openings and substantially radial 0 enings to admit a lubricant, a shaft provided at one end with a rigid annular conical enlar ement adapted to fit the tapered opening 0 one of said bushings, a cone on the other end of said shaft longitudinally movable thereon but incapable of relative rotation, said other end of said shaft being threaded, a laterally-split collar on said threaded end bearing against said cone and having a set-screw spanning the split portion of same to bindsaid collar on said threaded end of said shaft, said collar having a peripheral recess adapted to receive means for holding same against rotation relatively to the frame of the machine whereby by turning said shaft relatively thereto the bearings may be adjusted to run more snugly or freely. I

'2.-In a device of the kind specified, the

mounted thereon, one of said cones being rigid and the other thereof longitudinally ,movable on said shaft but incapable of rotation relatively thereto, said last-named cone being adapted to fit said threaded'bushing and said end of said shaft carrying same bein' threaded, an elastic collar mounted on said threaded end of said spindle and adapted to be adjusted to bind thereon and a cap engaging the threaded end of said bushing, said col ar being provided with a peripheral recess and said bushing and cap having a radial opening through whlch a pin may be inserted to engage said recess to hold said collar rigid With said standards.

In testimony whereof I have signed my name in presence of two subscribing witnesses.

FRITZ SCHULZ. Witnesses:

RUDOLPH WM. Lo'rzv E. M. SCHERBARTH. 

